Comparison

Scala Architectural Scale vs Block Calculator Plus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Scala Architectural Scale

This app allows users to measure printed architectural and engineering drawings directly on their device. It supports both known and unknown scales, offering fixed and variable scale options for precise measurements. Users can also select secondary units for quick conversions.

Highlights
  • Fixed and variable scale measurement
  • Supports unknown drawing scales
  • Secondary unit conversions (metric, decimal feet, feet/inches)
  • Adjustable measurement precision
  • Extensive scale options for architectural, engineering, and metric drawings
Features
Read full description

Let Scala Architectural and Engineering Scale change the way you measure printed drawings on the go and at your desk. With fixed and variable scales there is no limit to measuring a printed drawing of any scale, even if the scale is unknown. FIXED SCALES If you know the scale of a drawing, place your device on the drawing, scroll to the scale of the printed drawing and watch the chosen scale slide in. VARIABLE SCALES If the scale of a drawing is unknown, slide your finger on the variable scale and match the scale of one known element, lock it and use it to measure all elements on that drawing. MEASURING Slide the measurement slider in fixed or variable scale modes, along the scale to see the desired measurement displayed. SECONDARY UNITS Choose secondary units to be displayed while measuring, to quickly convert between metric, decimal feet and feet and inches. PRECISION Control the precision of the measurement units. —-— Scala Free Version includes: ARCHITECTURAL Fixed Scales: Full Scale (12”=1’-0”), 6”=1’-0”, 3”=1’-0”, 1 1/2”=1’-0”, 1”=1’-0”, 3/4”=1’-0” Variable Scale Range: Between full scale and 1/32”=1’-0” ENGINEERING Fixed Scales: 1”=10’, 1”=20’, 1”=30’, 1”=40’, 1”=50’ and 1”=60’ Variable Scale Range: Between 1”=10’ and 1”=300’ METRIC Fixed Scales: 1:1, 1:2, 1:5, 1:10, 1:20, 1:25 Variable Scale Range: Between 1:1 and 1:1000 Scala Full Version includes all scales above plus the following: ARCHITECTURAL Fixed Scales: 1/2”=1’-0”, 3/8”=1’-0”, 1/4”=1’-0”, 3/16”=1’-0”, 1/8”=1’-0”, 3/32”=1’-0”, 1/16”=1’-0”, 1/32"=1'-0" ENGINEERING Fixed Scales: 1"=80', 1"=100', 1"=200', 1"=300' METRIC Fixed Scales: 1:30, 1:40, 1:50, 1:75, 1:100, 1:125, 1:200, 1:250, 1:300, 1:400, 1:500, 1:1000 —-—

About

Block Calculator Plus

This app provides nine specialized calculators to accurately estimate masonry materials for various construction projects. It helps calculate blocks, bricks, mortar, concrete, and gravel needed for walls and other structures, supporting multiple units of measurement.

Highlights
  • 9 concrete block estimation calculators
  • Estimate blocks, bricks, mortar, and fill
  • Supports US customary and metric units
  • Calculate for walls, concrete, and gravel
  • Area and volume calculation tools
Features
Read full description

9 concrete block estimation calculators to estimate masonry material for block and brickwork projects. Estimate blocks or bricks needed for a wall, mortar, concrete fill, concrete, or gravel. 9 Free Calculators: - block calculator - brick calculator - mortar calculator - block fill calculator - concrete calculator - gravel/sand calculator - retaining wall calculator - area calculator - volume calculator Enter dimensions in inches, feet, yards, centimeters, or meters. Get results in US customary or metric measurements. Based on the calculators on Inch Calculator(www.inchcalculator.com) that are trusted by millions of people world-wide for material estimation.

Screenshots

Scala Architectural Scale4 screens
Block Calculator Plus4 screens

Verdict

The call

The clearest difference is in-app purchases: Block Calculator Plus at none against Scala Architectural Scale's 1. Block Calculator Plus also leads on ratings volume (967 vs 24) and rating (4.8 vs 4.6). Scala Architectural Scale's advantage is ads (none vs shown). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Scala Architectural Scale sells 1 one-off in-app purchase. Block Calculator Plus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Block Calculator Plus holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Block Calculator Plus has 967 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 87% of Scala Architectural Scale's written reviews are positive against 100% of Block Calculator Plus's.

UpkeepUpdate frequency

Scala Architectural Scale ships an update every 4 months, Block Calculator Plus every 2 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

Scorecard8 real differences · 2 level
Scala Architectural Scale versus Block Calculator Plus: the parameters behind the verdict, then further details
ParameterScala Architectural ScaleBlock Calculator Plus
PriceFreeFree
Rating4.6 (24 ratings)4.8 (967 ratings) — better
Positive reviews86.7% of reviews100.0% of reviews — better
Number of ratings24967 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size1 MB33 MB
Age rating4+4+
DeveloperNoerah AlviCalc Hub, LLC

Customer experience

Scala Architectural Scale

All ratings25 ratings
Positive88.0%
Neutral8.0%
Negative4.0%
Written reviews15 reviews
Positive86.7%
Neutral0.0%
Negative13.3%

Block Calculator Plus

All ratings845 ratings
Positive97.4%
Neutral1.5%
Negative1.1%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Scala Architectural Scale

One-time1
  • Scala Full Version$2.99
None

Block Calculator Plus

No in-app purchases

Questions

Is Scala Architectural Scale free?
Scala Architectural Scale is free to download, with in-app purchases available.
Is Block Calculator Plus free?
Block Calculator Plus is free to download, with no in-app purchases.
Which has better reviews, Scala Architectural Scale or Block Calculator Plus?
Block Calculator Plus is rated higher. Scala Architectural Scale averages 4.6 out of 5 from 24 ratings, while Block Calculator Plus averages 4.8 from 967 ratings.
Do Scala Architectural Scale or Block Calculator Plus have ads?
Block Calculator Plus shows ads; Scala Architectural Scale does not.
Which is updated more often, Scala Architectural Scale or Block Calculator Plus?
Scala Architectural Scale ships an update every 4 months, and Block Calculator Plus every 2 months. Most recently, Scala Architectural Scale was updated on October 26, 2026 and Block Calculator Plus on October 29, 2026.

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